The decision and execution of whether to keep the gun mounted at eye level or break it down (lower it and use your arms for running power) during movement between shooting positions. Short distances keep the gun up; longer distances benefit from breaking the gun down and using your arms to run faster, then remounting 2-3 steps before the next shooting position. This is a movement efficiency skill that directly impacts both foot speed and readiness to shoot on arrival.
Keeping the gun pinned to your face during a long sprint costs approximately 30% of your running power because the arms cannot swing naturally. Most shooters keep the gun mounted during all movement because it feels "ready," but on runs of 5+ steps this readiness comes at a massive foot speed penalty. Breaking the gun down and remounting 2-3 steps before arrival produces faster overall times because the foot speed gain far exceeds the remount cost.